Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3724/SP.J.1227.2012.00231 |
Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley | |
Wang, FengNian1; Li, BaoSheng1,2; Wang, JiangLong3; Wen, XiaoHao1; Niu, DongFeng1; Li, ZhiWen4; Si, YueJun1; Guo, YiHua1; Du, ShuHuan5 | |
通讯作者 | Li, BaoSheng |
来源期刊 | JOURNAL OF ARID LAND
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ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2012 |
卷号 | 4期号:3页码:231-240 |
英文摘要 | Situated in the Salawusu River Valley, southeast of China’s Mu Us Desert, the MGS2 (Milanggouwan section) portion of the Milanggouwan stratigraphic section records 5.5 sedimentary cycles consisting of alternations between dune sand deposits and fluvial or lacustrine facies. We analyzed the grain-size and CaCO3 distributions in MGS2, and found that Mz (mean particle diameter) and a (standard deviation) displayed clear variations in peaks and valleys within different sedimentary facies. The CaCO3 content averaged 0.4% in the dune sand deposits, 1.43% in the fluvial facies, and 8.82% in the lacustrine facies. Both the grain-size distribution and CaCO3 contents, which equal the indicators for the alternation among the sedimentary fades, suggest the occurrence of 5.5 cycles. These results suggest that the observed cycles mainly resulted from fluctuations between a cold and dry winter monsoon climate and a warm and humid summer monsoon climate, and that the MGS2 portion experienced at least 5.5 fluctuations between these two extremes. This high-frequency climatic fluctuation indicates a strong influence of millennium-scale variations in the strength of the East Asian winter and summer monsoons in our study area during the Pleniglacial. |
英文关键词 | Salawusu River Valley Pleniglacial paleoclimatic indices CaCO3 grain-size |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000307201200001 |
WOS关键词 | ICEBERG DISCHARGES ; ATLANTIC ; PLATEAU ; SECTION ; AGE |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 中国科学院地球环境研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/173329 |
作者单位 | 1.S China Normal Univ, Sch Geog, Guangzhou 510631, Guangdong, Peoples R China; 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; 3.Chenghai Middle Sch, Shantou 510601, Peoples R China; 4.E China Inst Technol, Coll Earth Sci, Nanchang 330013, Peoples R China; 5.Chinese Acad Sci, S China Sea Inst Oceanol, Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, FengNian,Li, BaoSheng,Wang, JiangLong,et al. Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley[J]. 中国科学院地球环境研究所,2012,4(3):231-240. |
APA | Wang, FengNian.,Li, BaoSheng.,Wang, JiangLong.,Wen, XiaoHao.,Niu, DongFeng.,...&Du, ShuHuan.(2012).Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley.JOURNAL OF ARID LAND,4(3),231-240. |
MLA | Wang, FengNian,et al."Pleniglacial millennium-scale climate variations in northern China based on records from the Salawusu River Valley".JOURNAL OF ARID LAND 4.3(2012):231-240. |
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